Tension device for shuttles



Deu. 8, 1925? f l 1,565,187.

c. F. MOORE TENSION DEVICE FOR SHUTTLES Filed June 26. 1924 ,4 TTORNEYS Patented Dec. 8, r l UNITED STATES PATENT oFFicE.

CHARLES FREDERICK MOORE, F NORWICH, CONNECTICUT, ASSIGNOR TO THE SCHWARZENBACH HUBER CO., OF WEST HOBOKEN, NEW JERSEY, A CORPORATION on NEW JERSEY.

TENSION DEVICE FOR SHUTTLES.

Application lcd June26, 1924. Serial No. 722.533.

To aZ-Z whom t may concern.'

Be it known that I, yGuarana FREDERICKl Moons, a citizen of the United States, and a resident of Norwich, in the county of New 6 London and State Connecticut, have invented a new and Improved Tension Device for Shuttles, of which the following is a full, clear, and exact description.

-This invention relates to improvements in l0 shuttles, and particularly to an improved `tension device and guide for the thread, and has for an object to provide an effective simplified construction which will automatically provide the desired tensionv as the shuttle l moves.

Another object is to provide a tension device which begins to function automatically as soon as the thread is placed in operative position.

vA still further object is to provide an auto- 'matic threading structure and tension device whereby in machines using automatic shuttles, the thread will be automatically threaded and simultaneously brought under-the proper tension.

In the accompanying drawing y Figure 1 is a fragmentary top lan view showing one end of a shuttle wit an embodiment of the invention applied thereto.

- Figure 2 is a edge-view of the structure,

shown in Figure 1.

Figure 3 is 4a sectional view through Figure 1 approximately on line 3-3.

Figure 4 is a transverse' sectional view 35 through Figure 2 approximately on lin y 4 4. A V f.

` Figurel 5 is a transverse sectional view `th h Fi re 2 a roximatel on line mug I. A ".l upstanding plate 16, which receives the Fi re 7l' is a Alongitudinal horizontal sectiona view through Figure 3 approximately on line 7-f7u Figure 8 is 'a perspective vie'w ofthe automatic threading and lguiding structure embodying certain features of the invention. Figure 9 is a side elevation of the tension device shown in Figure 7.

Referring to the accompanying drawing by numerals, 1 indicates a shuttle, whlch 1s but when completed will appear as shown in the drawing, particularly .in Figure 8.

'From this figure, it will be noted that this thread guide or automatic threading device is formed with a top 6 rounded to conform somewhat tothe shape of the end of the shuttle and provided with turned down members 7 and 8, member 8 acting to guide the thread into the .passageway 9, While the member acts to guide the thread to the ten' sion devlce 3. As it moves over the tension device 3, the thread passes along the end 10 out through the-side. slot 11 formed in the shuttle 1, and as it moves through this slot kit always moves` downwardly and out past the-posts 12 and 13. ,Referring to Figures 4 and 5. it will benoted that the turned down member v8 extends slightly below the upwardl extending section 14, whereby the threa will ordinarily be held a ainst return movement, as the threa usually operates slightly above the top of member 14. 'A pin or reduced section 15 extendsv downwardly from the to guiding guiding t 6 and forms a ost, as shown 1n Figure 7i, for e thread throughthe opening 9 to the tension device AFrom Figure 7, it

will be noted that the; post '15 extends downwardly substantially centrally' of the tension device 3, and extends through the bot- "tom of' plate '17. as illustrated in Figure 3.

'The 'tension device 3 is provided with an screws 5, and a horizontal plate 17 ,v from which a forwardly extendin bracket 18 extends and also from which t e tension arms 19,20 and 21 extend, each of said arms being .provided with a hook 22. A shaft 23fis rotatably mounted in the bracket 18, this shaft being also journaled in an auxiliary bracket 24 upstanding from one end of the plate 17. This shaft receives a tubular member 25, from which projects the tension fingers ,26 and 27, said fingers being preferably round in cross section and are the length to project beyond the hook 22 when fully de- 'y of the usual type andA cut away' at .the front `1 for receiving a th'read guiding structure 2 .55' -and a tension device 3. The thread gluding pressed.v When this has been done, as indicated inI dotted lines in `Fi ure 9, the open n end of the hook 22 is close but the thread Q v 'p 1,565,187

is allowed to pass freely through the eye formed thereby.- In order to produce a proper tension on the thread, a resilient member 28 is connected at one end to the tubular member 25 and has the opposite end held in a given position by the screw 29. The

, member 28 has been shown as ashort section of rubber which has been found to be extremely desirable, though a metallic s ring or other elastic member might be substituted without departing from the spirit of the invention. In case a greater tension is desired, the member 26 would be shortened or given another turn around the screw 29. `When the parts are in operative position, the thread and associated parts will assume the various positions shown in Figure 7, and in this position the thread ma be pulled through to the ri ht or `the leftr as viewed in this re an properly feed out of the'shuttle W ile being continually maintained under tension by the respective lingers 26 and 27 and assoclated parts.' lThese lingers also act to a large extent .as take-up for taking up slack thread. l 4

I claim:

`A take-up and tension device for shuttles, comprising means forY guidin the thread over a certain path as it. is pul ed so that it will automatically be fitted into the correct position,` said means including a pair of.

overlapping members forming a passage- Way, said members at Ithe point of overlapping being spaced apart suiliciently to permit the thread to pass therethrough, a Elurality of spaced stationary arms having ooks arranged adjacent said threadguiding means, a plurality of ngers co-acting with said hooks, and resilient means for causing said fingers to press the thread so that it will frictionally en age said hooks. CHARLES, FREDERIgCK MOORE. 

